package com.fxanadu.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.fxanadu.reggie.common.R;
import com.fxanadu.reggie.entity.Employee;
import com.fxanadu.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    //员工登录
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        //将页面提交的密码进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());  //md5加密算法，了解即可

        //根据提供的用户名查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //返回结果
        if (emp == null) {
            return R.error("登录失败");
        }

        if (!emp.getPassword().equals(password)) {
            return R.error("登录失败");
        }

        if (emp.getStatus() == 0) {
            return R.error("账号已经被禁用");
        }

        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    //员工退出
    @PostMapping("logout")
    public R<String> logout(HttpServletRequest request){
        //清理session中保存的当前登录员工的Id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    //添加员工
    @PostMapping
    public R<String> save(HttpServletRequest request , @RequestBody Employee employee){
        log.info("新增员工，员工信息：{}", employee.toString());
        //设置初始密码
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());

        //获取当前登录用户的id
        Long empId = (Long) request.getSession().getAttribute("employee");
        employee.setCreateUser(empId);
        employee.setUpdateUser(empId);
        employeeService.save(employee);

        return R.success("添加成功");
    }



    //分页查询
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        log.info("page = {},pageSize = {},name = {}",page,pageSize,name);

        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        //添加 过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        //添加排列条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo, queryWrapper);

        return R.success(pageInfo);
    }


    /*
    根据Id修改员工信息
    * */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){

        Long empId = (Long)request.getSession().getAttribute("employee");
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /*
    * 根据Id查询员工信息
    * */
    @GetMapping({"/{id}"})
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据Id查询员工信息");
        Employee employee = employeeService.getById(id);
        if (employee != null) {
            return R.success(employee);
        }
        return R.error("没有查询到对应的员工信息");
    }

}
